Lock, bolt, and latch releasing device.



H. V. PERREAULT. LOGK, BOLT, AND LATCH RELEASING DEVICE.

APPLICATION FILED AUG. 19, 1911.

Patented Feb. 10, 1914.

3 SHEETS-SHEET 1.

, INVENTOR: ca 1:

*6}; A TTORNEY.

H. V. PERREAULT.

LOOK, BOLT, ANDILATGH RELEASING DEVICE. I

APPLICATION FILED AUG.19, 1911.

Pajtented Feb. 10, 19%

3 SHEETS-SHEET 2.

INVENTOR- 9/8875 64:6 A 7701mm.

WITNESSES:

fla/w d f 5 00??? H. V. PERREAULT.

LOCK, BOLT, AND LATCH EELEASING DEVICE.

APPLICATION FILED AUG.19, 1911.

1,086,848. Patented Feb.-10, 1914.

3 SHEETS-SHEET 3.

WITNESSES IN VEN TOR: W972. M

Wan/0M f @miga ATTORNEY.

COLUMBIA'PLANOGRAPH co. wAsmN ooooooo c.

PATENT orFIoE.

HENRY VICTQR PEBREAULT, or ownnn, riassacnusnrrs.

LOCK, BOLT, -AND LATCH BELEASING DEVICE.

Specification of Letters Patent.

Patented Feb.10 1914.

Application filed August 19, 1 911. Seriallto. 644,9(18.

To all whom it may concern Be it known that I, IIENRY Vrcron PER- REAULT, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a new and useful Improvement in Lock, Bolt, and Latch Releasing Devices, of which the following is a specification.

This invention relates to lock, bolt and latch releasing devices, particularly, for independently hinged, outwardly opening double exit doors of buildings for large assemblies of people, as school-houses, churches and public halls. One door of such a pair, sometimes called a standing door, is less frequently used than the other or swing door and is ordinarily held in-the closed position by Cremorne bolts, arranged at the top and bottom of the inner face of said standing door and simultaneously operated by the same lever. The swing door usually carries a key-operated or dead bolt lock or ,a spring latch or both, to engage the standing door. When nervous or excited persons attempt to open one or both doors, they frequently draw the Cremorne bolts and crowd the doors outward without retracting the dead bolt or spring latch of the swing door. School-children, carelessly or mischievously, often act in the same manner. When the doors are thus opened, without first disengaging the doors from each other, the keepers of the bolt and latch are broken, the lock and latch are bent or broken and the adjacent stiles of the doors and the center bead are broken,some or all of these mishaps are certain to occur,-entailing a considerable loss for repairs and replacement of broken parts of costly doors, locks and latches.

The objects of this invention are to make it impossible to draw the Cremorne bolts without simultaneously disengaging the lock bolt and latch-bolt from the standing door, and to facilitate the opening of the doors, when both are required to be opened immediately, in case of fire or panic and without the use of a key.

In the accompanying drawing, Figure l is an inside or rear elevation of adjacent parts of a pair of double swinging doors provided wit-li my improvement, parts ofthe doors and of the cases of the locking and unlocking devices being removechthe latch and dead bolt being in engaging position; 2, ,a similar view, the latch and bolt being retracted; Fig. 3, a vertical cross .sectionon the line 3 3 in Fig. l of the rack-caseand the push --rods, showing in end elevation the racksand inside elevation thepinions which engage them; Fig. 4, a front elevation of the raclecase and its contents, the cover of the case being removed; Fig. 5, a rear elevation of the doors provided with my improvement. The remaining figures show the invention used merely to disengage a springprotruded latch; Figs. 6-9 illustrating a convenient means of applying a latch-releaseiyto doors where the latch andCremorne bolts are already in place; Figs. 6, 7 Sand 9 corresponding respectively in a general way to Figs. 1 3, 4 and 5 Fig. 6 being a I'QfllBlG- vation with parts of the door and guide-box removed, showing the gears and racks operatedby the movement of the Cremorne boltrods arranged at a distance fronithe T or lever by which said Cremorne bolts are op,- erated; Fig. 7, an end elevation of the parts shown in 8, and Fig. 8, a rear elevation showing the racks and the connecting mutilated pinion which operate the push-rod, the rear ofthe case being removed, and Fig. 9, a rear elevation ofidouble doors provided with the devices shown in Figs. 6, 7 and-8; Figs. 10, 1-1 and-l2 also correspond in a general way to Figs. 1 3, l and 5, except that theyshow the preferred construction where the Cremorne bolts and latch are to be applied with my device to new doors; Fig. 10being a rear elevation of the doors, part of thedoor and rack-case being broken away and the mutilated pinion being attached directlyto the shank of the T or Cremorne bolt-operatinglever and engaging a rack secured to the push-rod, the latch being closed; ,Fig. 11, an elevation of the free edge of theswinging door fitted with the rack, pinion and push-rodshown in Fig. 10, the side oftherack-case being removed; Fig. .12, a front elevation of the rack-case, push-rod, rack and pinionwhich engages said rack, the rear of-said case being removed.

In Figs. .1, 2, 5, 6, 9, and 1 0, A denotes a standing door or door which is intended tore nain closed whenonly one ofth e doors is required and A the always used or swing door; 13 E the Cremorne bolts carried by the standing door A and entering keepers b b above and below said door A and connected by rods 6 b to means of operating them simultaneously, said means being represented as consisting of a pinion 12* engaging two racks of 17" arranged on opposite sides of said pinion, within a guide-box B and each jointed to one of said rods, and a T-shaped handle or T 6 the shank of which is'rigidly secured to said pinion, so

that said bolts may be thrown into or out of engagement by turning said T in the proper direction. These parts are of any usual construction and operation except as hereinafter stated.

In Figs. 1-5 the swing door A carries a lock or lock-case 0 having a dead bolt 0 capable of being operated by a suitable key 0 in the usual manner and normally prerented from being otherwise opened (except as hereinafter stated) by tumblers 0 (pivoted in the usual manner on a stationary stud 0 which engage a stump 0 carried by the dead bolt 0, until said tumblers c are raised by a suitable key to bring the gates or slots 0 of all the tumblers into the same plane with said stump in the usual manner when the further turning of the key moves the dead bolt longitudinally into locking or unlocking position. Into this look I intro duce a tumbler-lifter for raising the tumblers when the bolt is in looking position (Figs. 1 and 2). This tumbler-lifter consists of a slide D, represented as arranged parallel with said bolt 0 and as guided between said bolts and the bottom of the lockcase C, (the inner end of said tumbler-lifter having a downward projection cl which rests on said bottom) and by the bottom of the bolt-opening 0 The outer end of the slide is flush with the outer end of the bolt and with the face of the look when said bolt is in its retracted position but is moved out-- ward with said bolt when the latter is projected from the case, said bolt having in its under side a slot 0, into which a pin (Z1 in the top of said slide projects, so that when said'bolt is projected the inner end of the slot being against said stud forces said slide outward with said bolt, until the bolt comes to rest. A spring-lever D pivoted upon a stud c on the inside of the back of the case G passes down freely between two pins d 0Z projecting laterally from the bolt and enters a V-shaped slot (Z in the side of the slide in such a manner as to project the outer end of the slide beyond the outer end of the bolt when the bolt is thrown outward until the pin (Z reaches and is stopped by striking the outer end of the slot of. The slide D is provided with an inward and downward incline (Z upon which or immediately above which rest downward projections c with which the tumblers o are provided when the slide is projected to its greatest extent, these tumbler projections 0 respectively being of such length that when the slide is retracted into the case by pressure from without, all said tumblers are raised to the proper height to allow the bolt to be retracted by the backward pressure of the spring-lever D upon the pin (Z said lever at first yielding sufficiently to allow the tumblers to be raised out of engagement with the stump of the bolt. \Vhen the bolt and slide are fully retracted the tumbler-projections 0 spring down into a notch (Z in the top of the slide, as shown in Fig. 2, allowing the tumblers to return to their normal stump-engaging position and preventing the slide from being projected from the case C without the use of the key applied in the usual manner, the sides of the tumbler projections and the end of said notch engaged thereby being substantially vertical.

In F l and 2 a pinion E is represented as fast. on the stem of the T-handle 5 con centrically therewith, and in engagement with the rack f which slides horizontally and carries a push-rod f which is crowded against the slide D when the handle 12 is operated to withdraw the Crcmorne bolts B, 13 the doors A, A being closed and locked,

the push rod f pushing said slide into the lock and lifting the tumblers, then forcing back the dead bolt. In Figs. 1 and 2 the swing door A is represented as provided with a latch G arranged in the case C and normally protruded from said case by a spring 9 in the usual manner. This latch G is pushed into the case simultaneously with the dead bolt by means of another push-rod fflcarried by a rack f arranged parallel with the push-rod and rack f and operated in a similar manner by a pinion E in engagement with and driven by the pinion E above described. Thus both the push-rods, the rack and the pinions are operated by the turning of the T-handle simultaneously with the drawing of the Cremorne bolts B B to unlock and unlatch the doors from each other. These racks and pinions are arranged in a metallic case II or box let into the door and covered by the case which contains the racks 7) b and the pinion 6 which ope-rate the Cremorne bolts. The push-rods f pro guide-plate (t which is held in place by the usual strike plate a which covers the mouth of said mortise, said guide-plate a having holes a in which said push-rods f f have a sliding fit and by which they are guided.

In Figs. 6, 7, 8, a latch-bolt G and spring 9 of the ordinary construction and as above described are shown without a lock and the same letters indicate corresponding parts as in figures previously described. In Figs. 6, T and 8, the Cremorne bolts are operated as above described and to the lower bolt-rod b is secured as by set-screws b a clamp Z9 adjustable on the bolt-rod b and having an arm I) fixed thereon which arm reaches into a hole 7" in a vertical rack f and causes said rack to reciprocate with said bolt-rod b that is to rise when the lower bolt B is raised. The vertical rack f engages one member c of a compound mutilated gear E and the other member 6 of said gear en gages a horizontal rack F from which pro ject arms f 7 which enter and have a sliding fit in horizontal grooves i '5 (shown in dotted lines in Fig. 8) in the sides of a carrier-block I, which adjustably connected to said rack 7" by said arms f f and by an adjusting screw -i'-' which turns without advancing in said rack and enters a screw threaded hole in said block to vary the distance between the push-rod f rigidly secured to said carrier-block parallel with said rack according to the thickness of the standing door to which these parts are applied. The racks f f and gear E are arranged in a metallic case H similar to the case H above described, which case H is represented as let into the door A flush with the face thereof and is preferably covered by a plate 72, on which the clamp o slides. The carrier-block I is outside of the case and the push-rod carried thereby is directed by a guide-plate a similar to that shown in Figs. 1 and 2, against the latch G when the Cremorne bolts are withdrawn.

The construction shown in Figs. 69 is adapted to be applied where the Cremorne bolts are already in use and the guide-box is not suitably located for the direct attachment of the push-rod actuating pinion to the stem of the T.

The remaining figures (10-12) show a push-rod f carried by a horizontal rack f actuated by a gear E fast on the stem of the T handle, the parts indicated by the same letters of reference being as heretofore de scribed in construction and operation. The racks b b which are jointed to the bolt-rods must be arranged to engage the opposite side of their operating pinion or the rack f must be placed in engagement with the under side of the gear E I claim as my invention 1. The combination in a lock, of a case, a dead bolt, tumblers to engage said bolt and to retain said bolt in its locking position, a tumbler-lifter arranged in said case and means arranged wholly outside of said case for operating said tumbler-lifter to disengage said tumblers from said bolt and to retract said bolt.

2. The combination in a lock of a dead bolt, provided with a stump, tumblers to en gage said stump and to retain said bolt in its locked position, each of said tumblers being provided with a gate to permit the passage of said stump, a tumbler-lifter, means for projecting and retracting said lifter, connecting means between said lifter and all said tumblers to bring the gates of all said tumblers to the same plane with said stump by the retraction of said lifter and means 01 guiding said lifter parallel with said olt.

3. The combination in a lock of a dead bolt, tumblers to engage said bolt and to retain said bolt in its locking position, a tumbler lifter adapted to disengage said tumblers from said bolt and subsequently to retract said bolt by the retraction of said lifter and yielding connecting means between said lifter and said bolt to project the outer end of said lifter beyond the outer end of said bolt by the locking of said bolt.

4:. The combination of a lock adapted to be carried by one of a pair of swinging doors and having a dead bolt and tumblers to engage and retain said bolt in its locked position, a tumbler-lifter adapted to disengage said tumblers from said bolt and carried by said lock, yielding connecting means between said bolt and said lifter, to project the outer end of said lifter beyond the outer end of said bolt by the locking of said bolt, a pushing device carried by the other of said doors and means for operating the sameto force said lifter into said lock, to disengage said tumblers from said bolt and subsequently to unlock said bolt.

The combination of a lock adapted to be carried by one of a pair of swinging doors and having a dead bolt and tumblers to engage and retain said bolt in its locked position, a tumbler-lifter adapted to disen gage said tumblers from said bolt and carried by said lock, yielding connecting means between said bolt and said lifter, to project the outer end of said lifter beyond the outer end of said bolt by the locking of said bolt, a pushing device carried by the other of said doors, Cremorne bolts carried by said last-named door and means for simultaneously operating said lifter to release said dead bolt and for retracting said Cremorne bolts.

6. The combination in a latch-releasing device for double swinging doors, of Oremorne bolts adapted to be carried by one of said doors, means for simultaneously operating said bolts, a pinion operatively connected with said bolts, 21 rack engaged by said pinion and a push-rod carried by said last-named rack, with a spring latch, carried by the other of said doors, in alinement In witness whereof, I have affixed my sigwlth sald push-rod When szud doors are nature 1n presence of two wltnesses.

closed and adapted to en a 'e said first w v named door and to be push ed out of such HENRI VICEOR PERREAULT engagement by said push-rod simultzme- Witnesses: ously wlth the dlsengagenlent of SELld. Cre- ALBERT M. MOORE, morne bolts. HAROLD F. DODGE.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

